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remove_leading_path: use a strbuf for internal storage

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This function strcpy's directly into a PATH_MAX-sized
buffer. There's only one caller, which feeds the git_dir into
it, so it's not easy to trigger in practice (even if you fed
a large $GIT_DIR through the environment or .git file, it
would have to actually exist and be accessible on the
filesystem to get to this point). We can fix it by moving to
a strbuf.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King 2015-09-24 17:07:47 -04:00 committed by Junio C Hamano
parent e9ba678175
commit 4635768809
1 changed files with 6 additions and 4 deletions
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10
path.c
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@ -632,7 +632,7 @@ const char *relative_path(const char *in, const char *prefix,
*/
const char *remove_leading_path(const char *in, const char *prefix)
{
static char buf[PATH_MAX + 1];
static struct strbuf buf = STRBUF_INIT;
int i = 0, j = 0;
if (!prefix || !prefix[0])
@ -661,11 +661,13 @@ const char *remove_leading_path(const char *in, const char *prefix)
return in;
while (is_dir_sep(in[j]))
j++;
strbuf_reset(&buf);
if (!in[j])
strcpy(buf, ".");
strbuf_addstr(&buf, ".");
else
strcpy(buf, in + j);
return buf;
strbuf_addstr(&buf, in + j);
return buf.buf;
}
/*